Helsingborg, May 22 -- US Secretary of State Marco Rubio said that discussions aimed at halting the conflict with Iran have shown "some slight progress," while simultaneously echoing Washington's dissatisfaction with its NATO allies.

Speaking to journalists during a meeting of NATO foreign ministers in Sweden, the top American diplomat noted that there has been "some slight progress" in negotiations. He also reiterated US President Donald Trump's "disappointment" regarding the current stance of the trans-Atlantic alliance.

Elaborating on the diplomatic efforts during a press interaction in Helsingborg, the Secretary of State maintained a cautious tone regarding the breakthrough.

"There's been some slight progress. I don't want to exagg...